630011645 has 8 divisors (see below), whose sum is σ = 756428856. Its totient is φ = 503732736.

The previous prime is 630011623. The next prime is 630011663. The reversal of 630011645 is 546110036.

It can be written as a sum of positive squares in 4 ways, for example, as 25786084 + 604225561 = 5078^2 + 24581^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 630011645 - 2²² = 625817341 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24272 + ... + 43001.

It is an arithmetic number, because the mean of its divisors is an integer number (94553607).

Almost surely, 2^630011645 is an apocalyptic number.

It is an amenable number.

630011645 is a deficient number, since it is larger than the sum of its proper divisors (126417211).

630011645 is a wasteful number, since it uses less digits than its factorization.

630011645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69151.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 630011645 is about 25100.0327689029. The cubic root of 630011645 is about 857.2671701113.

It can be divided in two parts, 63001 and 1645, that added together give a palindrome (64646).

The spelling of 630011645 in words is "six hundred thirty million, eleven thousand, six hundred forty-five".